feat: TxSiftContext 추가 및 HttpAdapterServiceSupport 적용

- TxSiftContext 클래스 추가: SIFT MDC 등록/해제 및 appender close 공통 처리
     - begin(): isSiftEnabled() 확인 후 MDC 등록, 이미 설정된 경우 스킵
     - end(): appender 즉시 close 후 MDC 제거 (UUID 등 1회성 key 용도)
   - HttpAdapterServiceSupport: MDC 직접 제어 코드를 TxSiftContext.begin/end로
교체

src/main/java/com/eactive/eai/adapter/http/dynamic/HttpAdapterServiceSupport.java

@@ -19,6 +19,7 @@ import com.eactive.eai.adapter.http.dynamic.filter.HttpAdapterFilterType;
 import com.eactive.eai.adapter.http.dynamic.filter.JwtAuthException;
 import com.eactive.eai.common.TransactionContextKeys;
 import com.eactive.eai.common.util.Logger;
+import com.eactive.eai.common.util.TxSiftContext;
 import com.eactive.eai.common.util.UUIDGenerator;
 
 public abstract class HttpAdapterServiceSupport implements HttpAdapterService, HttpAdapterServiceKey {
@@ -37,10 +38,7 @@ public abstract class HttpAdapterServiceSupport implements HttpAdapterService, H
 			prop.setProperty(TransactionContextKeys.TRANSACTION_UUID, uuid);
 		}
 		
-		if(MDC.get(Logger.DISCRIMINATOR) == null) {
-		    MDC.put(Logger.DISCRIMINATOR, uuid);
-		    bMDCput = true;
-		}
+		bMDCput = TxSiftContext.begin(uuid);
 		
 		try {
 			String transactionId = request.getHeader(HttpClientAdapterServiceKey.TRANSACTION_ID);
@@ -93,7 +91,7 @@ public abstract class HttpAdapterServiceSupport implements HttpAdapterService, H
 			}
 		} finally {
 			if(bMDCput)
-				MDC.remove(Logger.DISCRIMINATOR);
+				TxSiftContext.end();
 		}
 	}
 

src/main/java/com/eactive/eai/common/util/TxSiftContext.java

@@ -0,0 +1,31 @@
+package com.eactive.eai.common.util;
+
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.MDC;
+
+public class TxSiftContext {
+
+    /**
+     * 거래 시작 시 SIFT discriminator를 MDC에 등록한다.
+     * SIFT가 비활성화 상태이면 아무 작업도 하지 않는다.
+     */
+    public static boolean begin(String discriminatingValue) {
+        if (!Logger.isSiftEnabled()) return false;
+        if(MDC.get(Logger.DISCRIMINATOR) == null) {
+		    MDC.put(Logger.DISCRIMINATOR, discriminatingValue);
+		    return true;
+		}
+        return false;
+    }
+
+    /**
+     * 거래 종료 시 MDC에 등록된 SIFT appender를 닫고 MDC를 정리한다.
+     * begin() 에서 MDC가 설정되지 않았으면 아무 작업도 하지 않는다.
+     */
+    public static void end() {
+        String discriminatingValue = MDC.get(Logger.DISCRIMINATOR);
+        if (StringUtils.isBlank(discriminatingValue)) return;
+        Logger.closeSiftAppender(discriminatingValue);
+        MDC.remove(Logger.DISCRIMINATOR);
+    }
+}